Steam-boiler



(No Model.) 3 Sheets-Sheet 1 R. O. CARPENTER. STEAM BOILER.

No. 595,042. Patented De0.7, 1897.

WITNESSES: INVENTOR fl/ /7/ 5 m W BY 542/6 4; 5;-%W-q ATTORNEYS (No Model.) 3 Sheets-Sheet 2.

R. 0. CARPENTER.

' STEAM BOILER.

No. 595,042. Patented Dec. 7, 1897.

WITNESSES: INVENTOR ATTORNEYS.

3 Sheets-Sheejt 3.

(No Model.)

B. O. CARPENTER STEAM BOILER. No. 595,042. Patented De0.7,1'897.

INVENTOR EMQMMM ATTORNEYS UNITED STATES PATENT OFFICE.

ROLLA C. CARPENTER, OF ITHAOA, NEIV YORK.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 595,042, dated December 7, 1897.

Application filed March 25, 1 896.

To all whom, it may concern:

Be it known that I, RoLLA (3. CARPENTER, a citizen of the United States, residing at Ithaca, in the county of Tompkins and State of New York, have invented certain new and useful Improvements in Steam-Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to headers of sectional steam-boilers, and particularly to headers constructed of tough and strong metal, such as wrought-iron or mild steel, and which consequently must be made by some process other than that of casting; and my invention consists in the novel form and construction of the header.

The object of my invention is to provide a header for sectional steam-boilers, which may be constructed from wrought-iron or mild steel and by a process other than that of casting, which may be constructed readily and cheaply without the aid of special tools, which is simple in form, and which may be readily connected with the steam-drum of the boiler without the use of special connecting-nipples. This object is attained in the header for sectional steam-boilers herein described and illustrated in the drawings which accompany and form a part of this application, in which the same reference-numerals indicate the same or corresponding parts and in which Figure 1 is an elevation of a sectional steamboiler of the inclined water-tube type, employing headers constructed in accordance with my invention, one side of the brick setting having been removed to show the headers in place and to show the manner of their connection with the steam-drum. Fig. 2 is an end view of the boiler of Fig. 1, the end of the brick setting having been removed to show the arrangement of the headers. Figs. 3, 4, 5, and 6 are detail views of the header, Fig. 8 being a central longitudinal section thereof, Fig. 1a front view of a portion thereof opposite the endof one of the generatingtubes and showing the hand-hole by which access may be gained to the generating tubes, Fig. 5 a transverse section of the header in its upper or round part, taken on the line X X Serial No. 584,785. (No model.)

of Fig. 3, and Fig. 6 a transverse section of the header in its lower or flat part, taken on the line Y Y of Fig. 3; and Fig. 7 is an end elevation of another type of sectional steamboiler particularly adapted for marine use and employing bent headers and cross generating-tubes, the headers being constructed in accordance'with my invention. In this figure the casing surrounding the boiler is seetioned to show the generating-tubes and the headers.

The header which forms the subject-matter of my invention is a tube, of wrought-iron or mild steel, having at its upper end a cylindrical portion below which and opposite the ends of the generating-tubes the header is flattened, so as to form fiat surfaces in which are holes for the reception of the ends of the generatingtubes and for the hand-holes, by which access is gained to the generatingtubes. These headers are formed from tubin g of standard size by cutting the tubing into proper length and flattening that portion of each blank so formed which isto receive the ends of the generating-tubes, so as to give it an oval or rectangular section, as shown in Fig. 6. In the flat surfaces so formed holes for the reception of the generating-tubes and the opposite hand-holesmay be bored and the tubes extended into the header, which would be impossible were the header to retain its cylindrical form where it is connected to the generating-tubes. The tube may be flattened in the manner described by hammering and without the use of tools other than those which are always found in boiler-shops.

Heretofore in forming Wrought-iron or steel headers it has been the custom to form these headers by successive welding operations and by the use of collapsible dies. This method of construction is diflicult to carry out, and the headers so made have been expensive.

By my invention the headers may be made easily and cheaply, and, as above stated, no special tools, such as collapsible dies, are required.

Referring now to the drawings and at first to Figs. 1 to 6, inclusive, 1 1 are the steam and water drums of the boiler, suspended in the brick setting of the furnace-chamber of the boiler. In the bottoms of these drums are boxes or saddles 2 2, from which depend headers 3 3, constructed in accordance with my invention. These headers are at both the front and the rear of the drums. The front and rear headers are connected by rows of inclined generating-tubes 4 4 within the furnace-chamber of the boiler.

5 5 are the grate-bars of the furnace, and 6 and 7 are deflector-plates over the furnace, the object of which is to cause the gases from the furnace to follow a sinuous course in passing around the generating-tubes, so as to pass over as much surface of these tubes as possible and to impart as much heat as possible thereto. These defiectingrplates are parallel with and may be supported by the generating-tubes. Their ends overlap for a considerable distance, so that in passing around the plates the furnace-gases must pass over practically the whole length of the generating tubes.

In order to prevent the furnacegases from entering the stack through the crevices be tween the rear headers without first passing between the deflector-plates 6 and 7, the rear headers maybe luted with luting material below the plate 7.

The headers are shown in detail in Figs. 1 to 6, inclusive, Each header, as shown in the general views and in Fig, 3, consists of a tube having an upper cylindrical portion, the section of which is shown in Fig. ,5, and which tapers into a lower rectangular portion, the section of which is shown in Fig- 6, an which is formed, as already explained, by flattening a portion of the generating-tube from which the header is formed. In one side of this rectangular portion of the header are bored holes into which the ends of the gen erating-tubesmay be expanded. On the op posits side of the header are similar holes, forming hand-holes, by which access may be gained to the generating-tubes for the purpose of examining, cleaning, removing, and renewing the generatingmubes. Theend of each header is closed at the bottom by a cap 8.

Since the upper ends of the headers are cylindrical, hey may be expanded directly into the saddles 2 2' without the use of connectingmipples. This construction, there fore, reduces the number of expanded joints in the boiler and the number of parts and greatly strengthens it. The headers are arranged close together Within the boiler, as shown in Fig. 2, and little space is left between them for the passage of gases.

In Fig. 7 is shown a type of boiler more particularly adapted for marine use and employing headers likewise constructed in accordance with my invention. In this type of boiler the generating-tubes run diagonally across the furnace-chamber and are arranged in two oppositely-inclined series. The headers are formed, as in the first form of boiler, from tubing flattened at those portions which receive the generating-tubes, and these headers are bent substantially at right angles, so that each header receives at its lower end the ends of generating-tubes of one series and at its upper end the ends of generating=tubes of v the other series,

The headers of the boiler shown in Fig. 7 are provided with hand holes b th at the top and bottom, through which th nerating tubes may be cleaned and examined.

Having thus completely described my in vention, what I claim, and desire to secure by Letters Patent, is

1. The herein-described header for race tional boilers, consisting of a wrought-metal tube, round at one end fo insertion into the steam and Water drum, and closed at the other end, and flattened for a portion of its length and having in its flattened portion holes for the reception of the generating-tubes, substantially as described.

2, In a sectional boiler, the combination, with a steam and water d um, of generatingtubes below said drum, and headers connecting the ends of said generating-tubes with the steam and water drum, fo med of metal tubing, flattened for a portion of th ir length and having in such flattened portions holes for the recept on of the ends of the generating tubes, and expanded into holes in said s eam and Water drum, substantially as des ribed- In testimony whe eof I affix my signature in presence o t o Witnesses- ROLLA C, CARPENTER.

W tnesses:

Geo. T. TABBELZL, WM. HAZLITT SMITH. 

